Mountain Peak Detection in Online Social Media

نویسنده

  • Roman Fedorov
چکیده

We present a system for the classification of mountain panoramas from user-generated photographs followed by identification and extraction of mountain peaks from those panoramas. We have developed an automatic technique that, given as input a geo-tagged photograph, estimates its FOV (Field Of View) and the direction of the camera using a matching algorithm on the photograph edge maps and a rendered view of the mountain silhouettes that should be seen from the observer's point of view. The extraction algorithm then identifies the mountain peaks present in the photograph and their profiles. We discuss possible applications in social fields such as photograph peak tagging on social portals, augmented reality on mobile devices when viewing a mountain panorama, and generation of collective intelligence systems (such as environmental models) from massive social media collections (e.g. snow water availability maps based on mountain peak states extracted from photograph hosting services). 5 Sommario Proponiamo un sistema per la classificazione di panorami montani e per l'identificazione delle vette presenti in fotografie scattate dagli utenti. Ab-biamo sviluppato una tecnica automatica che, data come input la foto e la sua geolocalizzazione, stima il FOV (Field of View o Angolo di Campo) e l'orientamento della fotocamera. Questo avviene tramite l'applicazione di un algoritmo di matching tra la mappa degli edge (bordi) della fotografia e alle silhouette delle montagne che dovrebbero essere visibili dall'osservatore a quelle coordinate. L'algoritmo di estrazione identifica poi i picchi delle montagne presenti nella fotografia e il loro profilo. Verranno discusse alcune possibile applicazioni in ambito sociale come ad esempio: l'identificazione e tagging (marcatura) delle fotografie sui social network, realt aumentata su dispositivi mobile durante la visione di panorami montani e la generazione di sistemi di intelligenza collettiva (come modelli ambientali) dalle enormi collezioni multimediali dei social network (p.es. mappe della disponibilit di neve e acqua sulle vette delle montagne, estratte da servizi di condivisione di immagini).

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عنوان ژورنال:
  • CoRR

دوره abs/1508.02959  شماره 

صفحات  -

تاریخ انتشار 2015